AANTX.DLL is a Adware.Getup.B. AANTX.DLL is a Browser Helper Object. AANTX.DLL displays advertisements. Related files: %System%\AANTX.DLL %System%\WinExplore.exe More info: http://securityresponse.symantec.com/avc... Removal: Remove AANTX.DLL from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.